[Python-Dev] We now have C code coverage!

Brett Cannon brett at python.org
Fri Jun 29 09:25:07 EDT 2018

On Thu, Jun 28, 2018, 21:28 Terry Reedy, <tjreedy at udel.edu> wrote:

> On 6/24/2018 5:03 AM, Ammar Askar wrote:
> >> Is it possible, given that we are not paying for those reports, to
> >> customize the 'exclude_lines' definitions?
> >
> > Do you want to exclude python code or C code?
> Python code.
> > For Python code, coverage.py also has some comments you can
> > put down to exclude lines:
> > http://coverage.readthedocs.io/en/coverage-4.2/excluding.html
> Yes, by default, one can use '# pragma: no cover' and if one uses the
> --branch flag, '# pragma: no branch'.  For more 'advanced exclusion',
> one can use the following, normally in .coveragerc.
> [report]
> exclude_lines = ...
> "This is useful if you have often-used constructs to exclude that can be
> matched with a regex. You can exclude them all at once without littering
> your code with exclusion pragmas."
> For IDLE's test suite, I use a customized .coveragerc.  I strongly
> prefer to not abandon that and litter the code with # pragmas.
> In order to make sense of the coverage report and have it be truthful,
> one needs to know what options are being used.
> Is the --branch flag set?
> Is .coveragerc or some other configuration file in use?
> If so, what is the content?
> Do we have any control over the use and content of exclusion settings?

Everything is either covered by the Travis or codecov configuration files
which are both checked into the cpython repo. (I'm on vacation or else I
would provide links to the files themselves.)

> --
> Terry Jan Reedy
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